Brownies are the easiest cookie to make, but they are also the easiest to wreck. It is very hard to judge doneness so many cooks including myself *ahem* will overcook them. Most of the recipes will be done when they start to pull away from the sides of the pan. This recipe has a gooey caramel center so it is harder to judge doneness. Just watch carefully and be ready to pull these out. When I read the recipe and saw that you cooked one layer for 25 minutes, added caramel and more brownie mix and cooked for an additional 30 minutes I said no way! The recipe fooled me. It is a fantastic moist and chocolatey brownie. One of the best I have ever had. Try these and you will never make brownies from a box again and you may even throw your old recipe away. They won the taste test with about 42 of my best tasters!